ehn1 status report - indico-fnal (indico) · 07/12/2017 3 inside the clean room: apa#1 hv bias...

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EHN1 status report ProtoDUNE-SP ITI Meeting December 7 th , 2017

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Page 1: EHN1 status report - INDICO-FNAL (Indico) · 07/12/2017 3 Inside the Clean Room: APA#1 HV bias short investigated, found and fixed last week. A cable carrying the bias voltage got

EHN1 status report

ProtoDUNE­SP ITI Meeting December 7th, 2017

Page 2: EHN1 status report - INDICO-FNAL (Indico) · 07/12/2017 3 Inside the Clean Room: APA#1 HV bias short investigated, found and fixed last week. A cable carrying the bias voltage got

07/12/2017 2

Inside the cryostat

➢ HV  cup  has  been  installed  on  the  CPA  and  the CPA  itself  temporarily  moved  into  its  final position  to  check  the  alignment  of  the  cup  with the HV penetration

➢ Installation  of  resistors  at  the  end  of  the temperature  sensor  cables  lied  down  last  week has been completed and the full chain tested

➢ False floor tiles have been reorganized into their final  layout.  False  floor  is  not  planned  to  be removed until field cage deployment

➢ Bridge  Beam  A  (APA  bridge  beam)  has  been positioned  in  front  of  the  TCO,  ready  to  receive APA #1

Page 3: EHN1 status report - INDICO-FNAL (Indico) · 07/12/2017 3 Inside the Clean Room: APA#1 HV bias short investigated, found and fixed last week. A cable carrying the bias voltage got

07/12/2017 3

Inside the Clean Room: APA#1

➢ HV  bias  short  investigated,  found  and  fixed  last  week.  A  cable carrying  the  bias  voltage  got  caught  behind  the  bracket supporting a CE box, with the bracket screw ripping off the wire insulation

➢ HV bias for all the planes has been tested. They all work

➢ The  2  CR  boards  connected  to  the  3  wires  characterized  by excessively  low  noise  in  cold  (Matt’s  talk  from  last  week)  were removed, examined at the microscope and the connections tested in  LAr.  Nothing  broken  or  anomalous  was  found.  Additional tests  will  be  performed  next  week.  2  spare  CR  boards  were installed on APA #1, CE boxes mounted back and tested

➢ Wire tension test and APA flushing with GN2 ongoing

➢ APA #1 insertion in the cryostat foreseen for tomorrow

Page 4: EHN1 status report - INDICO-FNAL (Indico) · 07/12/2017 3 Inside the Clean Room: APA#1 HV bias short investigated, found and fixed last week. A cable carrying the bias voltage got

07/12/2017 4

Inside the Clean Room: APA#2

➢ Wire tension measurement, APA pictorial map (more from Serhan and Andrzej next week) and APA frame survey done last Thursday and Friday

➢ PD bars installation performed on Tuesday

➢ CE boxes and cables assembled and tested yesterday. Currently being installed

➢ Installation  of  PD  cables  scheduled  for tomorrow morning

➢ APA #2  foreseen  to be moved  in  front  of the Cold Box on Monday

Page 5: EHN1 status report - INDICO-FNAL (Indico) · 07/12/2017 3 Inside the Clean Room: APA#1 HV bias short investigated, found and fixed last week. A cable carrying the bias voltage got

07/12/2017 5

Cold Box

➢ Damaged plastic on the door repaired last week

➢ Rotation  of  temperature  sensors,  repair  of  the  plastic  inside  the  cold  box,  and  removal  of  the broken optical fiber completed yesterday

➢ Cleaning of Cold Box inner walls ongoing

➢ Installation of light diffuser with new optical fiber scheduled for tomorrow. At this point the Cold Box will be ready to host APA #2

➢ Installation of the new heaters and switching of inlet and outlet gas pipes (to be able to cool down from the top) will be done in the next weeks

Page 6: EHN1 status report - INDICO-FNAL (Indico) · 07/12/2017 3 Inside the Clean Room: APA#1 HV bias short investigated, found and fixed last week. A cable carrying the bias voltage got

07/12/2017 6

Next months schedule: December

➢ Week of December 11th

➢ APA #2 insertion in the Cold Box and start of the warm tests

➢ Move CPA parts and tables in the clean room. Start assembly of second CPA pair

➢ Week of December 18th

➢ APA #2 warm tests

➢ CPA  assembly  and  insertion  in  the  cryostat  of  what  is  accomplished  (CPA  +  top  or  all  field cages)

Page 7: EHN1 status report - INDICO-FNAL (Indico) · 07/12/2017 3 Inside the Clean Room: APA#1 HV bias short investigated, found and fixed last week. A cable carrying the bias voltage got

07/12/2017 7

Next months schedule: January➢ Week of January 8th

➢ Reception of APA #3 and insertion in the Clean Room

➢ Week of January 15th

➢ APA #3 acceptance test and frame survey

➢ APA #3 PD installation

➢ APA #2 cold test

➢ Week of January 22nd

➢ APA #3 CE installation and APA insertion in the Cold Box

➢ APA #2 move from the Cold Box into the cryostat

➢ Week of January 29th

➢ APA #3 in the Cold Box, warm and cold tests

➢ Assembly of last CPA pair

Page 8: EHN1 status report - INDICO-FNAL (Indico) · 07/12/2017 3 Inside the Clean Room: APA#1 HV bias short investigated, found and fixed last week. A cable carrying the bias voltage got

07/12/2017 8

Next months schedule: February➢ Week of February 5th

➢ APA  #3  in  the  cryostat:  first  APA  plane  moved  into  its  final  position  and  cabled  up  for readout/noise tests 

➢ Start End Wall assembly

➢ Week of February 12th

➢ Completion of first two End Walls assembly and insertion inside the cryostat➢ APA #4 arrives

➢ Week of February 19th and February 26th

➢ Completion of the first drift field volume

➢ APA #4 insertion into the Clean Room, acceptance test, PD and CE installation

To be able to meet this schedule, it is crucial that all the required components gets to CERN in time: parts for APA #3 integration should arrive by the time CERN opens in January, parts for APA #4 integration by end of January, readout flanges, cable trays and warm cables installed by 

end of January